Filter element



FIG. 1 is a top plan view of a first embodiment of a filter element, according to the present invention;

FIG. 2 is a side elevational view of the filter element of FIG. 1; all other side elevational views being identical thereto;

FIG. 3 is a bottom plan view of the filter element of FIG. 1;

FIG. 4 is a top plan view of a second embodiment of a filter element, according to the present invention;

FIG. 5 is a side elevational view of the filter element of FIG. 4; all other side elevational views being identical thereto; and,

FIG. 6 is a bottom plan view of the filter element of FIG. 4. 

The ornamental design for filter element, as shown and described. 